As soon as we landed we perceived that the ground was strewn with flaked chips of chalcedony, jasper, and similar stones.
When you desire his appearance, touch that chalcedony just before you.
These are generally in the condition of chalcedony, covered with very minute crystals of quartz.
Point for a drill or perforator chipped from chalcedony (Fig. 47).
chalcedony has been in all ages the commonest of the stones used by the gem-engraver.
Stone rings were in common use, formed chiefly of chalcedony.
Scattered over the hills and through the valleys are numerous beautiful specimens of chalcedony and chips of obsidian.
It is an aggregate of various siliceous minerals, of which chalcedony appears generally to be the base.
The surface of chalcedony is occasionally coated with a delicate bluish bloom.
This hardness is a property of other forms of silica, as quartz and chalcedony.
c.1300, from Latin calcedonius, in Vulgate translating Greek khalkedon in Rev. xxi:19, found nowhere else. Connection with Chalcedon in Asia Minor "is very doubtful" [OED]. The city name is from Phoenician and means "new town."
Mentioned only in Rev. 21:19, as one of the precious stones in the foundation of the New Jerusalem. The name of this stone is derived from Chalcedon, where it is said to have been first discovered. In modern mineralogy this is the name of an agate-like quartz of a bluish colour. Pliny so names the Indian ruby. The mineral intended in Revelation is probably the Hebrew _nophekh_, translated "emerald" (Ex. 28:18; 39:11; Ezek. 27:16; 28:13). It is rendered "anthrax" in the LXX., and "carbunculus" in the Vulgate. (See CARBUNCLE.)